Lab Gemstones

Our selection of kiln-safe Lab Gemstones are perfect for metal clay jewelry. Browse through all of our top quality Lab Gemstones and select among stones such as Citrine, Golden Topaz, Opal, Ruby Dark, Ruby Light, Sapphire and more. Most of our Lab Created Gemstones are affordable and safe to fire in metal clay of all kinds.

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  • Cabochon Oval Amber Gemstone example one Cabochon Oval Amber Gemstone example  two
    Sale
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    $9.00

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    $10.00
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    $9.00
    Amber Gemstone - Cabochon Oval
    Amber-like resin gems have the same look and feel as genuine amber. Extremely lightweight, the resin gemstones have a similar fiery medium red to dark red glow with golden flecks gleaming from with...
  • Goldstone Gemstone - Cabochon Oval
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    $2.00 - $5.50

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    $3.50
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    $2.00
    Goldstone Gemstone - Cabochon Oval
    Goldstone Gemstone Goldstone is a man-made stone created from glass with copper inclusions. Lab created gemstones are more affordable than natural stones, and unlike natural stones, they have no fl...
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    $6.75 - $9.90

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    $6.75
    Imitation Peacock Opal Gemstone - Cabochon Oval
    Imitation Peacock Opal Gemstone Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into meta...
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    $8.50

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    $8.50
    Imitation Peacock Opal Gemstone - Cabochon Round 6mm Pkg/2
    Imitation Peacock Opal Gemstone Lab created gemstones are more affordable than natural stones, and unlike natural stones, they have no flaws. Our lab created gemstones are as beautiful as natural s...
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    $5.60 - $9.50

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    $5.60
    Imitation Red Opal Gemstone - Cabochon Oval
    Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal clay. Available in a variety o...
  • Imitation Red Opal Gemstone - Cabochon Oval 13mm x 18mm - Pkg/1 Imitation Red Opal Gemstone - Cabochon Oval 13mm x 18mm - Pkg/1
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    $10.00

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    $18.50
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    $10.00
    Imitation Red Opal Gemstone - Cabochon Oval 13mm x 18mm - Pkg/1
    Product Dimensions: 13mm x 18mmMade in ChinaCreative Reward Points you'll earn: 10 Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perf...
  • Imitation Red Opal Gemstone - Cabochon Round Imitation Red Opal Gemstone - Cabochon Round
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    $5.25 - $20.15

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    $20.50
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    $5.25
    Imitation Red Opal Gemstone - Cabochon Round
    Imitation Red Opal Gemstone No Fire: Set after firing. Hardness: Imitation Opal has a rating of approximately 5.5 on Mohs hardness scale. Thickness: LAB-170: 1.5mm. LAB-171: 1.7mm. LAB-172: 1.8mm. ...
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    $7.80

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    $7.80
    Imitation White Opal - Round 6mm Pkg/2
    Imitation White Opal - Round Lab created gemstones are more affordable than natural stones, and unlike natural stones, they have no flaws. Our lab created gemstones are as beautiful as natural ston...
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    $10.00

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    $10.00
    Imitation White Opal - Square 6mm Pkg/2
    Imitation White Opal - Square Lab created gemstones are more affordable than natural stones, and unlike natural stones, they have no flaws. Our lab created gemstones are as beautiful as natural sto...
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    $5.85 - $12.00

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    $5.85
    Lab Gemstone - Alexandrite - Round
    Lab Gemstone - Alexandrite  Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal cl...
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    $3.50 - $4.90

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    $3.50
    Lab Gemstone - Alexandrite - Square
    Lab Gemstone - Alexandrite Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal cla...
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    $8.85

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    $8.85
    Lab Gemstone - Alexandrite - Trillion
    Lab created gemstones are more affordable than natural stones, and unlike natural stones, they have no flaws. Lab Gemstone - Alexandrite Stable at all metal clay temperatures. Hardness: Lab Alexand...
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    $4.50 - $9.00

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    $4.50
    Lab Gemstone - Blue Spinel - Barrel
    Lab Gemstone - Blue Spinel Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal cla...
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    $5.00 - $9.00

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    $5.00
    Lab Gemstone - Blue Spinel - Marquise
    Lab Gemstone - Blue Spinel Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal cla...
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    $4.00 - $8.00

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    $4.00
    Lab Gemstone - Blue Spinel - Oval
    Lab Gemstone - Blue Spinel  Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal cl...
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    $6.00 - $9.00

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    $6.00
    Lab Gemstone - Blue Spinel - Pear
    Lab Gemstone - Blue Spinel Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal cla...
  • Regular price

    $3.50 - $8.75

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    $3.50
    Lab Gemstone - Blue Spinel - Round
    Lab Gemstone - Blue Spinel Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal cla...
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    $4.00 - $6.00

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    $4.00
    Lab Gemstone - Blue Spinel - Square
    Lab Gemstone - Blue Spinel Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal cla...
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    $4.00 - $6.00

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    $4.00
    Lab Gemstone - Blue Spinel - Trillion
    Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal clay. Available in a variety o...
  • Lab Gemstone - Corundum Citrine - Barrel
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    $7.50 - $13.50

    Regular price
    $8.50
    Sale price
    $7.50
    Lab Gemstone - Corundum Citrine - Barrel
    Lab Gemstone - Corundum Citrine Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into meta...
  • Lab Gemstone - Corundum Citrine - Marquise
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    $14.00 - $32.00

    Regular price
    $17.00
    Sale price
    $14.00
    Lab Gemstone - Corundum Citrine - Marquise
    Lab Gemstone - Corundum Citrine Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into meta...
  • Lab Gemstone - Corundum Citrine - Oval
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    $8.00 - $15.00

    Regular price
    $9.00
    Sale price
    $8.00
    Lab Gemstone - Corundum Citrine - Oval
    Lab Gemstone - Corundum Citrine Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into meta...
  • Lab Gemstone - Corundum Citrine - Round
    Sale
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    $6.00 - $12.00

    Regular price
    $7.00
    Sale price
    $6.00
    Lab Gemstone - Corundum Citrine - Round
    Lab Gemstone - Corundum Citrine Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into meta...
  • Lab Gemstone - Corundum Citrine - Square
    Sale
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    $7.00 - $9.90

    Regular price
    $8.00
    Sale price
    $7.00
    Lab Gemstone - Corundum Citrine - Square
    Lab Gemstone - Corundum Citrine Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into meta...
  • Lab Gemstone - Corundum Citrine - Trillion
    Sale
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    $7.00 - $9.00

    Regular price
    $8.00
    Sale price
    $7.00
    Lab Gemstone - Corundum Citrine - Trillion
    Lab Gemstone - Corundum Citrine Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into meta...
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    $9.00 - $12.00

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    Sale price
    $9.00
    Lab Gemstone - Golden Topaz - Round
    Lab Gemstone - Golden Topaz Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal cl...
  • Regular price

    $10.50

    Regular price
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    $10.50
    Lab Gemstone - Opal Blue/Green - Square 6mm Pkg/2
    Lab Gemstone - Opal Blue/Green Lab created gemstones are more affordable than natural stones, and unlike natural stones, they have no flaws. Our lab created gemstones are as beautiful as natural st...
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    $9.45

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    $9.45
    Lab Gemstone - Padparadscha Sapphire - Round 6mm Pkg/2
    Lab Gemstone - Padparadscha Sapphire Lab created gemstones are more affordable than natural stones, and unlike natural stones, they have no flaws. TechSpecs Click here for our Gemstone Firing Guide...
  • Regular price

    $3.75 - $7.45

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    Sale price
    $3.75
    Lab Gemstone - Ruby - Round
    Lab Gemstone - Ruby Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal clay. Avai...
  • Regular price

    $4.25 - $6.35

    Regular price
    Sale price
    $4.25
    Lab Gemstone - Ruby - Square
    Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal clay. Available in a variety o...
  • Regular price

    $4.00 - $5.50

    Regular price
    Sale price
    $4.00
    Lab Gemstone - Ruby - Trillion
    Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal clay. Available in a variety o...
  • Regular price

    $10.50 - $14.40

    Regular price
    Sale price
    $10.50
    Lab Gemstone - Sapphire - Oval
    Lab Gemstone - Sapphire Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal clay. ...
  • Regular price

    $10.70 - $17.65

    Regular price
    Sale price
    $10.70
    Lab Gemstone - Sapphire - Round
    Lab Gemstone - Sapphire Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal clay. ...
  • Regular price

    $8.50 - $9.20

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    Sale price
    $8.50
    Lab Gemstone - Sapphire - Trillion
    Lab Gemstone - Sapphire Our lab created gemstones are as beautiful as natural stones. These high quality stones are precision cut and perfect for any setting, or to embed directly into metal clay. ...

Showing 1 -34 of 34 items

Lab Gemstones

Our selection of kiln-safe Lab Gemstones are perfect for metal clay jewelry. Browse through all of our top quality Lab Gemstones and select among stones such as Citrine, Golden Topaz, Opal, Ruby Dark, Ruby Light, Sapphire and more. Most of our Lab Created Gemstones are affordable and safe to fire in metal clay of all kinds.
For firing temperature and time on all gemstones, refer to our Gemstone Firing Guide:

Click here to download a PDF version of our firing guide.


What is a laboratory gemstone?

Gemstones created in a laboratory are considered synthetic gems. Different methods of “growing” gemstones can be used. This process uses the same components as natural counterparts. Generating a flawless gemstone for use in your metal clay artwork. It is worth noting, due to conflicting information, that in some cases additional components may be present.
Buying synthetic gemstones holds quite a few advantages. Buying the same gemstones from Cool Tools has great advantages in not only price but in the fact we are a United States Company that falls under the Federal Trade Commission. There are very strict standards we must adhere to in selling and marketing synthetic gemstones. Ensuring you the customer and jewelry artist get exactly what is advertised.


Amber

In its natural form Amber is the exception to the rule. A gemstone is composed of minerals; amber is not, being composed of organic materials. Even so this gemstone has worked its way into the hearts of many artists.


Ruby and Sapphire

These gemstones have been considered the most desirable and valuable gemstones in existence. Not a surprise that they are among the first targets of synthesis. Some of the earliest experiments date to the mid 19th century. Conducted by Marc Gaudin in France. Gaudins’ results were flawed however the Synthetic Gemstones you will receive have had 200 plus years of improvements.
The gemstones from cool tools are so good at simulating natural gemstones that it is nearly impossible for the naked eye to tell the difference.


Golden Topaz

Topaz is a fairly inexpensive gemstone in its natural form. Why buy a synthetic version?
Yes topaz is inexpensive it is also lightly colored in its natural form. Our synthetic versions have a rich full color. This advantage can bring out a glowing aspect to your jewelry at a affordable rate. Only the most experienced jewelers will notice the difference.


Citrine

Also known as the success stone. This brightly colored lag gemstone will bring out the success on your jewelry artwork.


Blue spinel

With a lively blue color this synthetic gemstone will save you money and add beauty to your artwork.


Alexandrite

According to stories this gemstone was discovered by a Finnish mineralogist Nils Gustaf Nordenskiold and named in honor of Tsar Alexander II of Russia.


Padparadscha Sapphire

This gemstone has a pink-orang to orang-pink hue. Originally found in Sri Lanka. These sapphires in there natural form are very rare. The name has roots in the work “Padma ranga” a word referring to a lotus flower color.


Nacre Pearls

These lab created pearls are the mother of pearls. With rich colors, it is difficult to tell the difference between natural and artificial. Nacre Pearls cannot be fired in a kiln.


Goldstone

A manmade glass with copper suspended within it, giving the sparkling appearance.
Goldstone has mysterious beginnings. Some legends believe goldstone was discovered through alchemy. Bring some of those mysteries to your artwork with Goldstone.